The problem comes from the fact that
Geohot's Limera1n tool uses a different bottom exploit than the one
that was supposed to be released today based the work of the Chronic Dev Team and the iPhone Dev Team. Since Apple likely wouldn't release a
new hardware revision for current generation devices to block the
bootrom exploit, it would be useable until Apple releases its next
generation iOS devices.

Instead of releasing two separate
bootrom exploits in short succession, giving Apple the opportunity to
kill both of them at once when the latest crop of iOS devices are
released, the Chronic Dev Team has made
the decision to delay its SHAtter-based exploit and instead
release a new tool based on Geohot's implementation according to
Redmond Pie.

Thanks to the irresponsible antics
of geohot, we will have to delay the release of greenpois0n (new ETA
= as soon as possible), so that we have time to clean up his little
mess and integrate the exploit he uses in limera1n into greenpois0n.
This way, we can save SHAtter for future devices that may still be
vulnerable to it.

We know that this is not what some
people want to hear, but due to geohot needing to feed his ego (as
usual) and revealing his limera1n exploit, we do not have any other
responsible options.

The Chronic Dev Team seems especially
peeved that Geohot's Limera1n is simply a beta release and has plenty
of bugs in it, and that it was seemingly released a day before
GreenPois0n just to steal the spotlight. In addition, Geohot's
jailbreak only works on Windows-based machines -- for now.

But the good news is that a jailbreak
solution for the iPhone 4 and iPod touch 4G is now available, albeit
in less than optimum form. If you want to take your chances and use
Geohot's solution, you can grab it here
(Windows-only). However, it may be a safer bet until GreenPois0n is
updated to take advantage of Geohot's exploit.

"Intel is investing heavily (think gazillions of dollars and bazillions of engineering man hours) in resources to create an Intel host controllers spec in order to speed time to market of the USB 3.0 technology." -- Intel blogger Nick Knupffer